#include <iostream>

using namespace std;

void jiecheng(void);

int main(void)
{
	jiecheng();

	return 0;
}

void jiecheng(void)
{
	long long j;
	unsigned long long jc = 1;
	for(j = 0; j < 50; j++)
	{
		cout << jc;
		jc *= (j + 1);
	}

	cout << "100! = " << jc << endl;
}
